Complete 2-Step Cleaning System – Includes a powerful cleanser and premium filter oil to thoroughly remove dirt, debris, and contaminants, then restore your filter’s original filtration efficiency. Prolongs Air Filter & Engine Life – Dissolves buildup that restricts airflow, helping your engine breathe freely for consistent power and reduced wear. Easy DIY Maintenance – Simple “spray, rinse, dry, oil” procedure requires no special tools—perfect for at-home or garage service. Superior Particle Capture – High-quality oil formula clings to fibers and traps even the finest dust and soot, keeping combustion chambers cleaner. Universal Reusable Filter Compatibility – Ideal for all washable diesel and gas engine air filters, from daily drivers to off-road and high-performance rigs. Ensure your diesel engine remains in top condition with the Sinister Diesel Air Filter Cleaning Kit. This complete maintenance solution—including a potent cleaning formula and high-quality filter oil—restores your reusable air filter’s performance, ensuring clean airflow and consistent engine efficiency. Whether you've been driving in dusty terrain or simply want to prolong the life of your high-flow filter, this kit rejuvenates your filter “to like-new levels,” safeguarding engine power and reducing fuel-sapping blockages. It's engineered to deliver maximum filtration, tackling even the smallest particles with precision.